Answer:
Step-by-step explanation:
A.fill the box as follows.
tally (remember to cross every 5)
20-29- IIIII
30-39-IIIIIII
40-49-IIIIIIIIIIIIIIIII
50-59-I
frequency-
20-29- 5
30-39- 7
40-49- 17
50-59- 1
B.Most common group is 40-49
C. range= 53-20=23 so it is 23.
